//
// server.cpp
// ~~~~~~~~~~
//
// Copyright (c) 2003-2008 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//

#include "server.hpp"
#include <boost/thread.hpp>
#include <boost/bind.hpp>
#include <boost/shared_ptr.hpp>
#include <vector>

namespace http
{
namespace server3
{

server::server(const std::string& address, const std::string& port,
               const std::string& doc_root, std::size_t thread_pool_size)
        : thread_pool_size_(thread_pool_size),
        acceptor_(io_service_),
        new_connection_(new connection(io_service_, request_handler_)),
        request_handler_(doc_root)
{
    // Open the acceptor with the option to reuse the address (i.e. SO_REUSEADDR).
    boost::asio::ip::tcp::resolver resolver(io_service_);
    boost::asio::ip::tcp::resolver::query query(address, port);
    boost::asio::ip::tcp::endpoint endpoint = *resolver.resolve(query);
    acceptor_.open(endpoint.protocol());
    acceptor_.set_option(boost::asio::ip::tcp::acceptor::reuse_address(true));
    acceptor_.bind(endpoint);
    acceptor_.listen();
    acceptor_.async_accept(new_connection_->socket(),
                           boost::bind(&server::handle_accept, this,
                                       boost::asio::placeholders::error));
}

void server::run()
{
    // Create a pool of threads to run all of the io_services.
    std::vector<boost::shared_ptr<boost::thread> > threads;
    for (std::size_t i = 0; i < thread_pool_size_; ++i)
    {
        boost::shared_ptr<boost::thread> thread(new boost::thread(
                                                    boost::bind(&boost::asio::io_service::run, &io_service_)));
        threads.push_back(thread);
    }

    // Wait for all threads in the pool to exit.
    for (std::size_t i = 0; i < threads.size(); ++i)
        threads[i]->join();
}

void server::stop()
{
    io_service_.stop();
}

void server::handle_accept(const boost::system::error_code& e)
{
    if (!e)
    {
        new_connection_->start();
        new_connection_.reset(new connection(io_service_, request_handler_));
        acceptor_.async_accept(new_connection_->socket(),
                               boost::bind(&server::handle_accept, this,
                                           boost::asio::placeholders::error));
    }
}

} // namespace server3
} // namespace http
